Bob bought 3 packs of model cars. he gave 4 cars to ann. bob has 11 model cars left how many model cars were in each pack.

Consider the system: y = 3x + 5 y = ax + b what values for a and b make the system inconsistent? what values for a and b make the system consistent and dependent? explain

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

If np3 /nc2 = 6, find the value of n